parse "gopher://null.host:0/H9\x9b)\xaa\x9b\x80 3\xa8\xde\x0e\x8eO\xb6\x11\xe6\xf2\xac\x06\xb7\xce\x0f\"*1@oTΒ\x8e\x84u\\\x88": net/url: invalid control character in URL